Defensive publication

ABSTRACT

CROSS-LINKABLE, STORAGE STABLE POLYMER COMPOSITIONS CAN BE PREPARED FROM THE FOLLOWING INGREDIENTS (A) AN ETHYLENICALLY UNSATURATED POLYME SUCH AS AN UNSATURATED POLYURETHANE, ALKYD RESIN, OR BUTADIENE POLYMER OR COPOLYMER; (B) A SMALL AMOUNT O A PRECURSOR OF A POLYFUNCTIONAL NITRILE N-OXIDE OR NITRILE IMINE HAVING A FORMULA SELECTED FROM   (Z)2&#39;&#39;, R-(Z)X&#39;&#39;, -(CO-Z)2&#39;&#39;, R-(CO-Z)X&#39;&#39;, R-(O-CO-Z)X&#39;&#39;,   R-(C(-X)=N-NHR&#39;&#39;)X&#39;&#39;, -(C(-X)=N-NHR&#39;&#39;)2&#39;&#39;, AND R-(NH-N=C(-X)-   R&#34;)X   WHERE Z IS   -C(-Y)=N-OH   Y IS -NO2 OR A HALIDE REDICAL; R IS A HYDROCARBON, HALOGENATED HYDROCARBON, HYDROCARBON-OXY-HYDROCARBON, HYDROCARBON-THIO-HYDROCARRBON OR HYDROCARBONSULFONYL-HYDROCARBON RADICAL; R&#39;&#39; IS A HYDROGEN, ALKYL, CYCLOALKYL, ARYL, ALKARYL, OR ARALKYL RADICAL; R&#34; IS AN ALKYL, CYCLOALKYL, ARYL, ALKARYL, OR ARALKYL RADICAL; X IS A HALIDE RADICAL; AND X IS AN INTEGER FROM 2 TO 5; (C) AN AMOUNT OF A SOLID VICINAL EPOXIDE IN EXCESS OF THAT REQUIRED TO CONVERT THE SAID PRECURSOR TO THE CORRE: SPONDING POLYFUNCTIONAL NITRILE N-OXIDE OR NITRILE IMIND, THE ABOVE DESCRIBED STORATE STABLE POLYMER COMPOSITIONS CROSS-LINK WHEN HEATED AT A TEMPERATURE OF ABOUT 70*C. TO ABOUT 180*C. AND ARE USEFUL IN SEALANT, ADHESIVE AND COATING FORMULATIONS.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.6. 887. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets 0! drawings contained in the application as originally filed. The files of these applications are available to the public ior inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits o! alleged invention. The Patent Oflice makes no assertion u to the novelty of the disclosed subject matter.

PUBLISHED SEPTEMBER 3, 1974 1926,001 CROSS-LINKABLE COMPOSITIONS Karl Brack, Wilmington, DeL, assignor to Hercules Incorporated, Wilmington, Del. Continuation of apppllcation Ser. No. 140,,993, May 6, 1971, which is a continuation-in-part of abandoned application Ser. No. 811,204, Mar. 27, 1969. This application Oct. 19, 1972, Ser. No. 298,895

int. Cl. COSg 41/04 US. Cl. 2608S8 No Drawing. 24 Pages Specification Cross-linkable, storage stable polymer compositions can be prepared from the following ingredients (a) an ethylenically unsaturated polymer such as an unsaturated polyurethane, alkyd resin, or butadiene polymcr or copolymer;

(b) a small amount of a precursor of a polyfunctional nitrile N-oxide or nitrile imine having a formula selected from and where Z is Y is NO or a halide radical; R is a hydrocarbon, halogenated hydrocarbon, hydrocarbon-oxy-hydrocarbon, hydrocarbon-thio-hydrocarbon or hydrocarbonsulfonyl-hydrocarbon radical; R is a hydrogen, alkyl, cycloalkyl, aryl, alkaryl, or aralkyl radical; R is an alkyl, cycloalkyl, aryl, alkaryl, or aralkyl radical; X is a halide radical; and x is an integer from 2 to 5;

(c) an amount of a solid vicinal epoxidc in excess of that required to convert the said precursor to the corresponding polyfunctional nitrilc N-oxide or nitrile imine. The above described storage stable polymer compositions cross-link when heated at a temperature of about 70 C. to about 180 C. and are useful in sealant, adhesive and coating formulations. 

